One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,13,15,11)(8,10)(9,16,18,12)(14,19)(17,20)(21,22,25,29)(23,30,31,35)(24,26,33,28)(27,34,36,32)(1,2)(3,4)(5,7)(6,11)(8,13)(9,17)(10,15)(12,20)(14,18)(16,19)(22,26)(23,31)(24,33)(27,35)(28,29)(30,36) involution — undirected(2,4)(5,8,10,6)(7,13,15,11)(9,16,18,12)(14,20,17,19)(5,9)(6,12)(7,14)(8,16)(10,18)(11,19)(13,20)(15,17)(21,23,25,31)(22,27,29,36)(24,34,33,32)(26,30,28,35)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.